The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 14, 1998
Filed:
Jul. 19, 1994
Applicant:
Inventors:
Assignee:
Nippon Oil Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10M / ; C10M / ;
U.S. Cl.
CPC ...
508156 ; 508186 ;
Abstract
An improvement in a method of lubricating an alcohol-based fuel engine with an engine oil composition, the improvement which comprises using as said composition an engine oil composition comprising a lubricating base oil and about 0.01 to 10% by weight based on the total weight of the engine oil composition of an alkaline-earth metal borate. Thus prepared engine oil compositions for alcohol-based fuel engines of the present invention are superior to the prior art compositions in capacity for neutralizing formic acid, wear resistance, and stability against hydrolysis.